مقاومت حرارتی ( ترمیستور ) 100 کیلو اهم NTC100K مناسب برای پرینتر های سه بعدی

Description:
A thermistor is a resistance thermometer or a resistor whose resistance is dependent on temperature. The term is a combination of “thermal” and “resistor.” It is made of metallic oxides, pressed into a bead, disk, or cylindrical shape and then encapsulated with an impermeable material such as epoxy or glass.
When a current flows through a thermistor, it generates heat, which raises the temperature of the thermistor above that of its environment. If the thermistor is being used to measure the temperature of the environment, this electrical heating may introduce a significant error if a correction is not made. Alternatively, this effect can be exploited. It can, for example, make a sensitive air-flow device employed in a sailplane rate-of-climb instrument, the electronic variometer, or serve as a timer for a relay as was formerly done in telephone exchanges.
A thermistor does not actually “read” anything, instead of the resistance of a thermistor change with temperature. How much the resistance changes depends on the type of material used in the thermistor.
A thermistor is a specific type of resistor that uses sensors to help regulate a cold and heat. They can do more than simply regulate temperature. They are also used for voltage regulation, volume control, time delays, and circuit protection.
Thermistors are categorized by the amount of resistance measured at ambient room temperature, which is considered 25°C. The device whose temperature needs to be maintained has certain technical specifications for optimum use, as determined by the manufacturer. These must be identified before selecting a sensor.
Thermistors are often used in the hot ends of 3D printers; they monitor the heat produced and allow the printer's control circuitry to keep a constant temperature for melting the plastic filament.

Features:  
Nominal Resistance: 100K (25 °C )
Operating Temperature Range: -40 °C ~ +300 °C
Temperature Coefficient of Resistance: -2～-5% / ℃
Value Accuracy : ± 1%
Thermal Time Constant : ≤7S (in static air)
Dissipated Power Coefficient : ≥5 mW / ℃ (in static air )
Maximum Rated Power : 45mW
Temperature Measurement Head Size: 3 x 15mm
Application: 3D Printing
Length: 1m